Powertrain Systems

Delphi Flow Biased Relief Valves provide manufacturers with an advanced solution for in-tank fuel pump pressure regulation in fuel injected engine fuel systems. They provide maximum fuel pressure control to help the engine management system achieve optimal fuel efficiency and reduced emissions.

Delphi Flow Biased Relief Valves are designed to be integrated into the fuel module. They feature all stainless steel construction, rather than elastomers, for excellent durability and reliable operation in all gasoline, diesel, ethanol and bio diesel engine programs.

Benefits

• Maintain even fuel flow pressure for efficient, stable system performance
• Seal at engine-off condition to maintain pressure and provide improved startability
• Wide flow range operation: 24 L/hr to 450 L/hr
• Small package size: 17.60 mm x 18.70 mm

Typical Applications

Delphi Flow Biased Relief Valves are suitable for a wide range of engine applications, including gasoline, diesel, ethanol, and bio diesel. Delphi High Flow Biased Relief Valves can be used in most fuel injected engine programs including:

• Automotive engines
  
• Non-automotive engines
  
• Small engines, including motorcycles and motor scooters

Performance Advantages

Delphi Flow Biased Relief Valves offer engine manufacturers a low cost solution to fuel pressure regulation compared to conventional diaphragm technology. They are designed to provide maximum fuel pressure control.

They enable optimal packaging efficiency because of their small size. Their diameter is only 17.60 mm and their overall length is only 18.70 mm.

Delphi Flow Biased Relief Valves feature all stainless steel construction for better corrosion resistance compared to conventional elastomer designs.

Availability

Delphi's Flow Biased Relief Valves are scheduled for production in mid-2010. Engineering samples are available. Contact Delphi for further information.

The Delphi Advantage

Building on more than 50 years' experience in fuel handling systems, Delphi is dedicated to the development of high quality, cost effective fuel handling technologies for integration with current and new engine designs. Delphi engineers hold numerous fuel handling trade secrets and more than 50 patents for fuel modules and fuel pump design. Delphi engineers understand the complex array of issues involved in efficient, reliable fuel handling performance. Delphi also has full capabilities to support fuel handling systems development.

As a global leader in engine management systems technology, Delphi can help manufacturers around the world meet emissions requirements, improve fuel economy and enhance performance. Delphi is a source for high value solutions and our systems expertise is built into every product. Delphi's flexible engineering approach encourages collaboration. And, Delphi has a thorough understanding of automotive markets around the world and a global network of resources.